29 research outputs found

    ASEAN Maritime Connectivity and Its Cooperation with China——With the 21st-Century Maritime Silk Road as the Background

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    曾经对世界经济产生过巨大影响的"丝绸之路",正在重新成为人们关注的热点。海上互联互通是"21世纪海上丝绸之路"的一个重要因素,东盟是建设"21世纪海上丝绸之路"的优先方向。因此,通过海运机构、行动计划和海运便利化机制了解东盟海上互联互通的战略措施;从海上贸易、海港运营、海洋航运以及海运辅助性服务分析东盟海上互联互通的现状及挑战,剖析东盟港口互联互通机制,并在此基础上分析东盟与中国海上互联互通的合作体系和问题,提出构建中国—东盟海上互联互通的建议,对推进"21世纪海上丝绸之路"并丰富其战略构想具有重要意义。The"Silk Road"once had a tremendous impact on the world economy. now it is again becoming the focus of attention. Maritime connectivity is an important factor in the 21st-Century Maritime Silk Road,ASEAN is the priority direction in the 21st-Century Maritime Silk Road. The paper tries to understand the policies and measures to promote maritime connectivity in ASEAN by ASEAN maritime agencies,action plans and maritime facilitation mechanisms,analyzes the current situation and the challenges of the maritime connectivity from maritime trade,port operations,marine shipping and maritime auxiliary services and the challenges of the future,and illustrates the connectivity mechanism of ASEAN Port. Based on it,we analyzes the maritime cooperation and the problem between China and ASEAN,proposes the idea of the maritime integration between China-ASEAN. All of which are important to advance the 21th-Century Maritime Silk Road and to enrich its strategic vision

    基于整合思维培养的《微观经济学》课堂教学方法改革与实践

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    《微观经济学》是商科专业核心必修课之一,作为一门理论性和应用性很强的基础性课程,其教学效果直接影响商科其他专业课程的教学,这给专业教学带来诸多挑战。基于整合思维培养的教育理念,通过批判性思维、创新性思维和系统性思维的训练,对微观经济学课程的课堂教学方法进行改革和实践。最后,对教学效果进行了分析评价。广东省高等教育教学改革项目“以问题为导向的整合思维教学模式探索—以《微观经济学》课程为例”; 广东省省级精品课程《微观经济学》项目的成

    FDI外溢与企业自主创新:一个基于产业集群与企业能力交互作用的整合框架

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    持续创新是企业保持长期竞争优势的关键,文章从产业集群和企业创新能力的视角入手,对fdI外溢效应与企业创新绩效之间的作用关系进行了回顾与分析,并从产业集群与创新能力在之间所起的作用出发提出一个整合框架。研究表明,本地企业通过fdI外溢源,以信息转移、能力提升、协同创新到能力转换为传播途径,并最终对创新绩效产生作用。教育部人文社科项目《FDI技术外溢与企业技术创新》(12YJC790286

    Synthesis and Photovoltaic Effect Study for Fullerene Complexe C_(60)Pd(Ph_2PCH_2PPh_2)

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    在氮气氛下 ,采用配体取代法 ,即以C60 取代Pd(Ph2 PCH2 PPh2 ) 2 中一个Ph2 PCH2 PPh2 合成出富勒烯金属配合物C60 Pd(Ph2 PCH2 PPh2 ) ,采用元素分析、红外光谱、紫外可见光谱、光电子能谱以及X射线粉末衍射等手段对产物进行表征 .同时研究了产物的光电性能、氧化还原性能及热稳定性能 .光伏效应研究结果表明 ,产物具有优良的光电转化性能 ,尤其是在BQ/H2 Q介质电对中 ,光生电压最大达到 174mV ;当C60 Pd(Ph2 PCH2 PPh2 )薄膜厚度为 1μm时 ,光伏效应值最大 .Fulerene complexe C_ 60Pd(Ph_2PCH_2PPh_2) was perpared by the method of ligand substitution via the reaction of C_ 60 with Pd(Ph_2PCH_2PPh_2)_2 under condition of a nitrogen atmosphere and refluxing, and the title compound was appraised and characterized by methods of elemental analysis, FT-IR, UV-vis, XPS and XRD.The results showed that the structure of purposeful product was that the Ph_2PCH_2PPh_2 took up two coordination sites of the central metal, and C_ 60 took up another two sites in σ-π feeback pattern. The porperties on photoelectricity, redox and thermostability of the title complexe were studied. The results of studying on photoelectricity showed that the photovoltaic effect of (n+n) heterojunction electrode formed by C_ 60Pd(Ph_2PCH_2PPh_2)/GaAs was supper, especially in the BQ/H_2Q redox couple, and the greatest value of photovoltaic potential was up to 174 mV. The photovoltaic performance of C_ 60Pd(Ph_2PCH_2PPh_2)/GaAs electrode at 1 μm for thickness of C_ 60Pd(Ph_2PCH_2PPh_2) film was the best.ProjectsupportedbytheNaturalScienceFoundationofFujianprovince (E0 4 10 0 0 1,E0 110 0 0 1,F0 2 10 0 10 ) ,DoctorProgramofHighterEductionofChina (980 384 10 )andSelf selectProgramofXiamenUniversity

    Synthesis and photovoltaic effect study for fullerene complexe C60Pd(Ph2PCH2PPh2)

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    Fulerene complexe C-60 Pd (Ph2PCH2PPh2) was perpared by the method of ligand substitution via the reaction of C-60 with Pd(Ph2PCH2PPh2)(2) under condition of a nitrogen atmosphere and refluxing, and the title compound was appraised and characterized by methods of elemental analysis, FT-IR, UV-vis, XPS and XRD. The results showed that the structure of purposeful product was that the Ph2PCH2PPh2 took up two coordination sites of the central metal, and C-60 took up another two sites in sigma-pi feeback pattern. The porperties on photoelectricity, redox and thermostability of the tide complexe were studied. The results of studying on photoclectricity showed that the photovoltaic effect of (n + n) heterojunction electrode formed by C60Pd(Ph2PCH2PPh2)/GaAs was supper, especially in the BQ/H(2)Q redox couple, and the greatest value of photovoltaic potential was up to 174 mV. The photovoltaic performance of C60Pd (Ph2PCH2PPh2)/GaAs electrode at 1 mum for thickness of C60Pd(Ph2PCH2PPh2) film was the best

    1978~2008年中国湿地类型变化

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    分别基于美国陆地卫星(Landsat MSS/TM/ETM+)和中巴资源卫星(CBERS-02B)影像数据,以人工目视解译为主,完成了中国1978~2008年4期(基准年分别为1978,1990,2000和2008年)湿地遥感制图,并进行了大量的室内外验证.在此基础上,对我国湿地现状及近30年来湿地变化进行了初步分析,得到以下主要结论:(ⅰ)截止2008年,中国湿地面积约为324097km2,其中以内陆沼泽(35%)和湖泊湿地(26%)为主.(ⅱ)1978~2008年,中国湿地面积减少了约33%,而人工湿地增加了约122%.过去30年里湿地减少的速度大幅降低,由最初5523km2/a(1978~1990年)降为831km2/a(2000~2008年).(ⅲ)减少的自然湿地(包括滨海湿地和内陆湿地),其类型变化由湿地向非湿地转化的比例逐渐降低.初期(1978~1990年)几乎全部(98%)转换为非湿地;在1990~2000年间减少的自然湿地约有86%转化为非湿地,而在2000~2008年,这一比例下降为77%.(ⅳ)气候变化和农业活动是中国湿地变化的主要驱动因素,湿地变化在中国分为三大不同特征区域,即西部三省/自治区(西藏、新疆和青海)、北部两省/自治区(黑龙江和内蒙古)和其他省市区.其中西部区域尤其是青藏高原,湿地变化的驱动因子以气候增温为主;新疆湿地由于气候增温和农业活动共同作用造成变化不大.北部省/自治区的湿地变化则主要由农业活动引起;而其他省市区的湿地变化几乎完全受控于人类的农业经济活动

    Marine Economic Development in Indonesia and Cooperation with China

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    作为一个海岛国家,印尼经济增长离不开海洋经济的发展。通过分析海洋经济对印尼经济、就业的贡献、主导性海洋产业的经济活动现状,以及中印两国海洋经贸关系,提出中印海洋产业合作的途径。As an island country,Indonesia marine economy is an important part of economic growth.Through summarizing the development course of the Indonesian marine economy,this paper explores Indonesian marine economy contribution to employment and overall economy,as well as the leading marine industry development.Finally,through the analysis of the marine economic and trade relationship between China and Indonesia,this paper proposes ways of marine industry cooperation between China and Indonesia

    Reverse Spillover Networks,R&D and Innovation Performance of Taiwan-Invested Companies

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    本文将台资企业的逆向外溢网络区分为国际外溢网络、本地外溢网络和台商外溢网络,分析不同逆向外溢网络对企业创新绩效的影响,并考虑r&d投入在之间所起的作用。基于在闽粤投资的91家台资企业为样本,采用问卷调查方式获取数据,运用回归分析进行实证检验。结果表明:国际外溢网络和台商外溢网络皆对企业创新绩效具有显著正向的影响;r&d投入在这两种逆向外溢网络与企业创新绩效之间均起到调节作用;r&d投入本地外溢网络与企业创新绩效之间的调节作用未通过实证检验。In this paper the reverse spillover networks of Taiwan-invested companies are classified into international spillover network,local spillover network and Taiwan-invested spillover network for the purpose of analyzing the influence of different reverse spillover networks on the innovation performance of the companies and the role of R&D investment in between.With a survey of the 91 Taiwan-invested companies in Fujian and Guangdong provinces,and a regression analysis testing the models,it is revealed:( 1) both international spillover network and Taiwan-invested spillover network have a significant impact on the innovation performance;( 2) R&D investment plays a moderating role in either the international spillover networkinnovation performance relationship or Taiwan-invested spillover network- innovation performance relationship;( 3) the moderating effect of R&D investment on the relationship between local spillover network and innovation performance is not proved.国家社会科学基金资助项目(12CJY042); 广东省高等学校优秀青年培养计划资助项目(Yq2013072

    刚性接触网悬挂结构刚度识别方法

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    接触网-受电弓系统是列车运行驱动力的来源。相比于柔性接触网,刚性接触网因其净空低、坚固耐用、抗风性好等优点一直是当前研究的热点。针对刚性接触网悬挂结构的传统建模方法是将其等效成弹簧结构,并根据能量守恒对其刚度进行等效。基于此,提出一种基于遗传算法的利用刚性接触网的实验模态信息识别建模参数的新方法,建立刚性接触网仿真模型新的验证和修改方法,设计若干常见工况对本方法的可行性进行验证。研究结果表明:本方法因其对结构刚度的敏感性,不仅可识别刚性接触网悬挂结构刚度,而且当悬挂结构损伤时,能够识别到悬挂结构弹簧的损伤位置和实际有效刚度值。经验证在常见工况下,该方法识别到刚度值的平均相对误差低于5%

    Strain rate dependent shear localization and deformation mechanisms in the CrMnFeCoNi high-entropy alloy with various microstructures

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    CrMnFeCoNi high-entropy alloys (HEA) with various microstructures have been produced using cold rolling followed by critical annealing at various temperatures. Shear deformation behaviors of this HEA with various microstructures at a wide range of strain rates (2 x 10(-3)-5 x 10(4) s(-1)) have been characterized using hat-shaped specimens. Strain hardening exponent and strain rate sensitivity have been obtained for various microstructures. No shear localization was observed up to shear strain of 8 for all microstructures under lower strain rates (2 x 10(-3)-1 x 10(1) s(-1)), while stress drop and shear localization were found to occur at various critical shear strains for various microstructures under dynamic shear loading (5 x 10(4) s(-1)). A new formula, considering competition of strain hardening and strain rate hardening against thermal softening, was proposed to estimate the critical shear strains under dynamic shear loading and the predicted results were found to be in a fairly good agreement with the experimental data. Based on micro-hardness testing, the strain hardening due to the microstructure evolution was found be much stronger under dynamic shear loading than that under quasi-static loading at the same interrupted shear strain, which can be attributed to the more efficient grain refinement and the triggered hierarchical deformation nanotwins under dynamic shear deformation
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